How to Buy Stocks

Clicking "buy" is the easiest part of trading. But the order type, timing, and execution method affect your fill price — and a bad fill on a $4–$12 stock can wipe out 20% of your planned profit before the trade even starts.

Order Types You Need to Know

Market Order

Executes immediately at whatever the current ask price is. Fast, but on $4–$12 stocks with moderate volume, you can slip 2–5 cents from the displayed price. On 100 shares, that's $2–$5 of slippage per trade. Use market orders only when speed is critical — like immediately exiting a position when your stop is hit.

Limit Order

The OPERATOR system's preferred order type. You specify the maximum price you'll pay. If the stock is at $6.10 and you set a limit at $6.12, you're willing to pay up to $6.12 but no more. You may not fill if the stock runs away — but you won't overpay.

Stop-Loss Order (Stop-Market)

Triggers a market order when price hits your stop level. If your stop is $5.40, the moment the stock trades at $5.40 the order fires as a market order. In normal conditions this works. In fast-moving markets or illiquid stocks, you can get a fill below your stop (called "gapping through" the stop).

Stop-Limit Order

Triggers a limit order when stop price is hit. You set a stop price AND a limit price. More control, but risk of not filling if price moves too fast. In $4–$12 stocks use stop-market orders — the risk of not filling the stop is worse than a few cents of slippage.